/Engine/Plugins/Editor/ObjectMixer/LightMixer/Source/LightMixer/Public/LightMixerObjectFilter.h
Specify whether we should return only the specified classes or the parent and child classes in placement mode. Defaults to 'None' which only considers the specified classes.
virtual [EObjectMixerInheritanceInclusionOptions](API\Plugins\ObjectMixerEditor\ObjectFilter\EObjectMixerInhe-) GetObjectMixerPlacementClassInclusionOptions() const